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Victor Kuznetsov
464fd142ea
Extend the development-only benchmark family from images to audio and video, and close four research directions from the watermark-landscape map with local, revision-pinned evidence. Benchmark schema: media_type audio and video rows, audioseal and videoseal adapters with media-checked adapter binding, sample-domain audio fidelity (SNR with unbounded_identical), frame-domain video fidelity (mean PSNR, changed-frame fraction), and per-frame temporal evidence in videoseal detection records. The report accepts all three media types and carries SNR columns. Audio: shared pinned AudioSeal oracle, synthetic and system-voice speech cohorts with matched negatives, codec, noise, removed, and forged arms, and the provenance experiment proving visual-only video cleaning leaves the audio bitstream and watermark verdict invariant. Video: TorchScript-only VideoSeal oracle (the pip package is unusable on macOS arm64 and its loader resolves paths relative to cwd), video cohort with crf/scale/fps attacks and four-state arms, temporal evaluation measuring the crf decay curve, the frame-aggregation matrix (computed locally after finding the TorchScript build ignores the aggregation argument), and real provider clips as carriers. Forgery: double-embedding study showing the last writer wins completely under both oracles, scoped remover-trace probe, and the forged/ removed cohort arms encoding each scheme's correct expected verdict (presence rule for audioseal, message rule for videoseal). C2PA resolution: measured the five vendors' resolver contracts and the C2PA 2.2 18.10.5 privacy gradient; product decision recorded that this tool never resolves over the network. A registry guard pins the published resolution-API set. Gate: ruff and pyright src/ clean, 2114 passed / 3 skipped; maintain.sh stops only on the known unfixed lightning 2.6.5 CVEs, pre-existing.